require "fast_spec_helper"

require_dependency "gitlab"

describe Gitlab do
  describe ".root" do
    it "returns the root path of the app" do
      expect(described_class.root).to eq(Pathname.new(File.expand_path("../..", __dir__)))
    end
  end

  describe ".revision" do
    let(:cmd) { %W[#{described_class.config.git.bin_path} log --pretty=format:%h -n 1] }

    around do |example|
      described_class.instance_variable_set(:@_revision, nil)
      example.run
      described_class.instance_variable_set(:@_revision, nil)
    end

    context "when a REVISION file exists" do
      before do
        expect(File).to receive(:exist?)
          .with(described_class.root.join("REVISION"))
          .and_return(true)
      end

      it "returns the actual Git revision" do
        expect(File).to receive(:read)
          .with(described_class.root.join("REVISION"))
          .and_return("abc123\n")

        expect(described_class.revision).to eq("abc123")
      end

      it "memoizes the revision" do
        expect(File).to receive(:read)
          .once
          .with(described_class.root.join("REVISION"))
          .and_return("abc123\n")

        2.times { described_class.revision }
      end
    end

    context "when no REVISION file exist" do
      context "when the Git command succeeds" do
        before do
          expect(Gitlab::Popen).to receive(:popen_with_detail)
            .with(cmd)
            .and_return(Gitlab::Popen::Result.new(cmd, "abc123", "", double(success?: true)))
        end

        it "returns the actual Git revision" do
          expect(described_class.revision).to eq("abc123")
        end
      end

      context "when the Git command fails" do
        before do
          expect(Gitlab::Popen).to receive(:popen_with_detail)
            .with(cmd)
            .and_return(Gitlab::Popen::Result.new(cmd, "", "fatal: Not a git repository", double("Process::Status", success?: false)))
        end

        it 'returns "Unknown"' do
          expect(described_class.revision).to eq("Unknown")
        end
      end
    end
  end

  describe ".com?" do
    it "is true when on GitLab.com" do
      stub_config_setting(url: "https://gitlab.com")

      expect(described_class.com?).to eq true
    end

    it "is true when on staging" do
      stub_config_setting(url: "https://staging.gitlab.com")

      expect(described_class.com?).to eq true
    end

    it "is true when on other gitlab subdomain" do
      stub_config_setting(url: "https://example.gitlab.com")

      expect(described_class.com?).to eq true
    end

    it "is false when not on GitLab.com" do
      stub_config_setting(url: "http://example.com")

      expect(described_class.com?).to eq false
    end
  end
end